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The automated weather observing system (AWOS) units are mostly operated, maintained and controlled by state or local governments and other non-federal entities and are certified under the FAA non-federal AWOS Program. [2]
White space around the chart is filled with map information and the legend, scales, and tables of airport and airspace information. Terrain is color-coded for its elevation and major roads, cities, and bodies of water are shown for visual reference, as well as other identifiable structures (e.g., stadiums and water towers). However, most of the ...
Map of regions covered by the 122 Weather Forecast Offices. The National Weather Service operates 122 weather forecast offices. [1] [2] Each weather forecast office (WFO or NWSFO) has a geographic area of responsibility, also known as a county warning area, for issuing local public, marine, aviation, fire, and hydrology forecasts.
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The long-term observing networks (ASOS, AWOS, COOP), however, are too sparse and report too infrequently for mesoscale research and forecasting. ASOS and AWOS stations are typically spaced 50 to 100 kilometres (30 to 60 mi) apart and report only hourly at many sites (though over time the frequency of reporting has increased, down to 5–15 ...
Complete documentation on the METAR format, PDF. Software libraries. Perl modules for parsing METAR reports at the CPAN site; PhpWeather is a PHP application (with a GNU General Public License) that parses METAR reports. pymetar and metar — Python libraries for METAR fetching and parsing; Using METAR data to see the Atmospheric Tide; Current ...
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Common traffic advisory frequency (CTAF) is the name given to the VHF radio frequency used for air-to-air communication at United States, and Australian non-towered airports. Many towered airports close their towers overnight, keeping the airport open for cargo operations and other activity.